Rotary bolt



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' 889n Patented Jan. 1, 1 0. No. 395,68

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ROTARY BOLT.

No. 885,880. Patented Jam.A '1, 1888.

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ROTARY BOLT.

No. 395,680. Patented Jan. 1,1889.,

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d UNITED STATES PATENT OFFICE.

GEORGE SUMMERTON, OF SAN FRANCISCO, CALIFORNIA.

ROTARY BO LT.

SPECIFICATION forming part of Letters Patent No. 395,680, dated January 1, 1889. Application filed March l5, 1888. Serial No. 267,270. (No model.) Patented in England September l5, 1887, No. 12,532.

To all whom tmay concern.-

Be it known that I, GEORGE SUMMERTON, of the city and county of San Francisco, State of California, have invented an Iniprovement in Bolting-Machines, (for which I have obtained English Patent No. 12,532, dated September l5, 1887;) and I hereby declare the followingI to be a full, clear, and exact description ofthe same.

My invention relates to improvmnciits in bolting-machincs for flour and other materials; and it consists inthe constructions and combinations of devices which I shall hereinafter fully describe and claim. y

Figure l is a side elevation of the bolt and connected mechanism. Fig. 2 a transverse section of the bolt. Figs. $3 and el. are plan lviews of the front and rear ends, showing the connected mechanism. Fig. 5 is a detail view of the end shaking device. Fig. G shows the manner of suspending the boxes of the bolt-shaft. Fig. 7 is a detail illustrating the shaft of one of the j ournal-boxes, the vertical and horizontal links connected therewith, and the slotted hangers and the locking-nuts.

A is a bolt, which is made hexagonal or any suitable form; but instead of having inwardlyprojecting ribs at the angles, as in the usual form of construction, I make an interior of iiat plates a in each of t-he angles, so that a transverse section of the interior will present six wide and six narrow surfaces. This bolt is suspended in ahorizontal position, instead of at an incline, as in ordinary use, and in the following manner: E is the shaft by which it is rotated, the ends of the shaft extending into the journal boxes or supports C, within which the shaft turns. These journal-boxes are suspended by links D from the hanger E, and they have other arms, F, extending horizontally from their sides, the arms being connected with the boxes by means of lugs projecting from the latter. The arms D and F are made adjustable in slots in the hangers or points of connection, so as to vary the angle of suspension and support. This regulates the travel of the material through the bolt and causes it to travel faster or slower at will. The bolt, being suspended in this manner, is caused to rotate, and has also an end shaking motion produced by mechanism hereinafter described, so that it swings endwise about its vertical suspending-rods, moving in a small are of a circle, and also having a slight side motion in a small arc of a circle, on account of the horizontal rods F.

The shaft B has a hollow trunnion, G, cxtending from one end into the journal-boxes C, and the bracket ll has a pin, which extends into the trunnion G, within which it is supported without turning, while the trunnion turns with the bolt and its shaft. -VVashers I are introduced between the end of the rotating sleeve G and the shoulder of the bracket Il to relieve friction. The bracket II carries the roller J, and this turns in contact with the eccentric li upon the vertical driving-shaft L, so that by the rotation of the shaft L and the eccentric an end reciprocating motion is produced, the bolt swinging `upon its suspending-links D, as above described.

In order to prevent the bracket II, in which the roller .I is journaled, from turning around by reason of the rotary motion of the shafttrunnion G, within which it is supported, the upper end of the bracket, or the journal-pin of the roller J, lies against a downwardlyprojecting extension, M, of the han ger-E,wl1ich prevents its turning' over in the direction of the rotation of the shaft B.

The hanger E is bolted upon a vertical lia11ge,fa,cast on the upper journal-box, N, ofthe vertical shaft Il. This shaft L receives motion from the horizontal driving-shaft by means of the bevelgear P, and in turn coinmunicates motion to the counter-shaft Q by means of the bevel-gearing R. The conveying-screws S below the bolt are driven by means of the chain T, passing around the sprocket-wheels II upon the screw-shafts and V upon the counter-shaft Another spreek-- ctwheel, lV, upon the counter-shaft Q gives motion to a chain, X, which in turn drives the sprocket-wheel Y upon the shaft B, and in this manner the rotation of the bolt is effected.

The end motion of the bolt is produced, as above described, by the action of the cam or eccentric K upon the vertical shaft Il, and as the opposite end of the bolt is suspended by links F and D from the bracket E in the same manner both ends will swing alike. In

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order to return the bolt as the eccentric recedes, I employ a spiral spring, Z, which is fixed at the opposite end of the bolt from the eccentric and presses against the journal-box at that end. This spring has its tension regulated by means of thescrew l), passing through. a bracket and into the guide-rod c of the spring Z, the latter acting against a collar, c', on one end of the rod c, and the other end presses against the edge of the box C. This rod extends into the triiinnion formed by the box C', and is guided therein. By this the spring may be more or less compressed, so as to cause a quicker action of the bolt.

The links D have a hole in the upper end, and this hole lits a sleeve or collar, (l, upon the pin which passes through the slot in the bracket E. Nuts e upon the end of the screwpin serve to lock it at any desired position within the slot, and as they screw up against the ends of the collar (l they do not bind or press upon the rod D, so as to prevent its swinging freely.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. A bolting-machine compri si n g a bolt having a shaft, mechanism for rotating said bolt, journal-boxes in which the journals of the shaft turn at opposite ends of the bolt, horizontal and vertical links loosely connected with the journal-boxes, and slotted hangers, in which the outer ends of said links are adjustably secured, substantially as herein described.

2. A bolting-machine comprising a bolt, a shaft, suspended journal-boxes at opposite ends of said shaft, vertical and horizontal links loosely connected with said boxes, slotted hangers, to which the outer ends of the links are adjustably connected, whereby the turning in contact with the roller J, so as to produce an end oscillation or shake of the bolt, substantially vas herein described.

4. rIlhe horizontal rotary bolt having the ends of its shaft j ourn aled in boxes suspended by links from above, the bracket carrying the anti-friction roller J, and the eccentric or cam from which an end shaking motion is transmitted through the bracket and journal-boxes to the bolt, in combination with the depending plate, against which the upper end of the shaft of the roller .I travels, and by which the bracket is retained in its upright position, substantially as herein described.

5. A bolting-machine comprising the horizontal rotary bolt, the suspended swinging boxes at the ends thereof, a shaft journaled in said boxes, horizontal links connected with the boxes and with a fixed support, a cam or eccentric at one end of said bolt, and a spring at the opposite end, whereby an end shaking or oscillating motion of the bolt is produced, substantially as described.

In witness whereof I have hereunto set my hand.

GEORGE SUMMERTON.

IVitnesses:

S. H. NoUnsE, H. C. LEE. 

